Nature Communications (Mar 2024)
Reversible non-volatile electronic switching in a near-room-temperature van der Waals ferromagnet
- Han Wu,
- Lei Chen,
- Paul Malinowski,
- Bo Gyu Jang,
- Qinwen Deng,
- Kirsty Scott,
- Jianwei Huang,
- Jacob P. C. Ruff,
- Yu He,
- Xiang Chen,
- Chaowei Hu,
- Ziqin Yue,
- Ji Seop Oh,
- Xiaokun Teng,
- Yucheng Guo,
- Mason Klemm,
- Chuqiao Shi,
- Yue Shi,
- Chandan Setty,
- Tyler Werner,
- Makoto Hashimoto,
- Donghui Lu,
- Turgut Yilmaz,
- Elio Vescovo,
- Sung-Kwan Mo,
- Alexei Fedorov,
- Jonathan D. Denlinger,
- Yaofeng Xie,
- Bin Gao,
- Junichiro Kono,
- Pengcheng Dai,
- Yimo Han,
- Xiaodong Xu,
- Robert J. Birgeneau,
- Jian-Xin Zhu,
- Eduardo H. da Silva Neto,
- Liang Wu,
- Jiun-Haw Chu,
- Qimiao Si,
- Ming Yi
Affiliations
- Han Wu
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Lei Chen
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Paul Malinowski
- Department of Physics, University of Washington
- Bo Gyu Jang
- Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory
- Qinwen Deng
- Department of Physics and Astronomy, University of Pennsylvania
- Kirsty Scott
- Department of Physics, Yale University
- Jianwei Huang
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Jacob P. C. Ruff
- Cornell High Energy Synchrotron Source, Cornell University
- Yu He
- Department of Physics, University of California
- Xiang Chen
- Department of Physics, University of California
- Chaowei Hu
- Department of Physics, University of Washington
- Ziqin Yue
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Ji Seop Oh
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Xiaokun Teng
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Yucheng Guo
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Mason Klemm
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Chuqiao Shi
- Department of Materials Science and NanoEngineering, Rice University
- Yue Shi
- Department of Physics, University of Washington
- Chandan Setty
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Tyler Werner
- Department of Applied Physics, Yale University
- Makoto Hashimoto
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory
- Donghui Lu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory
- Turgut Yilmaz
- National Synchrotron Light Source II, Brookhaven National Lab
- Elio Vescovo
- National Synchrotron Light Source II, Brookhaven National Lab
- Sung-Kwan Mo
- Advanced Light Source, Lawrence Berkeley National Laboratory
- Alexei Fedorov
- Advanced Light Source, Lawrence Berkeley National Laboratory
- Jonathan D. Denlinger
- Advanced Light Source, Lawrence Berkeley National Laboratory
- Yaofeng Xie
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Bin Gao
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Junichiro Kono
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Pengcheng Dai
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Yimo Han
- Department of Materials Science and NanoEngineering, Rice University
- Xiaodong Xu
- Department of Physics, University of Washington
- Robert J. Birgeneau
- Department of Physics, University of California
- Jian-Xin Zhu
- Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory
- Eduardo H. da Silva Neto
- Department of Physics, Yale University
- Liang Wu
- Department of Physics and Astronomy, University of Pennsylvania
- Jiun-Haw Chu
- Department of Physics, University of Washington
- Qimiao Si
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- Ming Yi
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
- DOI
- https://doi.org/10.1038/s41467-024-46862-z
- Journal volume & issue
-
Vol. 15,
no. 1
pp. 1 – 11
Abstract
Abstract Non-volatile phase-change memory devices utilize local heating to toggle between crystalline and amorphous states with distinct electrical properties. Expanding on this kind of switching to two topologically distinct phases requires controlled non-volatile switching between two crystalline phases with distinct symmetries. Here, we report the observation of reversible and non-volatile switching between two stable and closely related crystal structures, with remarkably distinct electronic structures, in the near-room-temperature van der Waals ferromagnet Fe5−δ GeTe2. We show that the switching is enabled by the ordering and disordering of Fe site vacancies that results in distinct crystalline symmetries of the two phases, which can be controlled by a thermal annealing and quenching method. The two phases are distinguished by the presence of topological nodal lines due to the preserved global inversion symmetry in the site-disordered phase, flat bands resulting from quantum destructive interference on a bipartite lattice, and broken inversion symmetry in the site-ordered phase.
